Extend Zero API with zelSetDriverTeardown and use it in unittest main

Signed-off-by: Sorin Butnariu <sorin.butnariu@intel.com>

Author: sbutnari

src/plugins/intel_npu/src/utils/include/intel_npu/utils/zero/zero_api.hpp

@@ -65,7 +65,8 @@ namespace intel_npu {
     symbol_statement(zeCommandListGetNextCommandIdExp)        \
     symbol_statement(zeCommandListUpdateMutableCommandsExp)   \
     symbol_statement(zeInitDrivers)                           \
-    symbol_statement(zelGetLoaderVersion)
+    symbol_statement(zelGetLoaderVersion)                     \
+    symbol_statement(zelSetDriverTeardown)
 // clang-format on
 
 class ZeroApi {

src/plugins/intel_npu/tests/unit/main.cpp

@@ -27,19 +27,11 @@ int main(int argc, char** argv, char** envp) {
     // register crashHandler for SIGSEGV signal
     signal(SIGSEGV, sigsegv_handler);
 
-    std::shared_ptr<void> lib;
     try {
-        using zelSetDriverTeardownF = ze_result_t (*)();
-        zelSetDriverTeardownF zelSetDriverTeardown = nullptr;
-
-        auto libpath = ov::util::make_plugin_library_name({}, "ze_loader");
-#if !defined(_WIN32) && !defined(ANDROID)
-        libpath += LIB_ZE_LOADER_SUFFIX;
-#endif
-        lib = ov::util::load_shared_object(libpath);
-        zelSetDriverTeardown =
-            reinterpret_cast<zelSetDriverTeardownF>(ov::util::get_symbol(lib, "zelSetDriverTeardown"));
-        zelSetDriverTeardown();
+        const auto zeroApi = intel_npu::ZeroApi::getInstance();
+        if (zeroApi) {
+            intel_npu::zelSetDriverTeardown();
+        }
     } catch (...) {
         // ze_loader not present on the system, probably it is not an NPU host
     }